20571928

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{197807}}^1$

素因数の和:197826

約数の個数: 16

約数和(自身を含む): 41539680

約数和(自身を除く): 20967752

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 197807, 395614, 791228, 1582456, 2571491, 5142982, 10285964, 20571928]

約数ペア:

[(1, 20571928), (2, 10285964), (4, 5142982), (8, 2571491), (13, 1582456), (26, 791228), (52, 395614), (104, 197807)]